/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineEventsInterface.h
Trigger an event by name
Whether the event was successfully triggered
bool TriggerEvent ( const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & PlayerId, const TCHAR * EventName, const [FOnlineEventParms](API\Plugins\OnlineSubsystem\Interfaces\FOnlineEventParms) & Parms )